6 INTRODUCTION. 



1896.— Selby (' Nat.', Dec. 1896, pp. 355-365)- 



1897. — Barnsley (' Nat.', Nov. 1897, PP- 341-348)- 



1898. — East Keswick (' Nat.', Dec. 1898, pp. 357-362). 



1899. — Sutton, near Askern (' Nat.', Nov. 1899, pp. 337- 

 339; Dec, pp. 367-372). 



1900. — Mulgrave Woods (* Nat.', Nov. 1900, pp. 337-350). 



1901. — Cadeby, etc. (' Nat.', Nov. 1901, pp. 333-350). 



1902.— Egton Bridge, etc. (' Nat.', Nov. 1902, pp. 355-365). 



1903. — Helmsley (' Nat.', Nov. 1903, pp. 425-436). 



1904. — Rokeby ('Nat.', Nov. 1904, pp. 329-342). 



The list of 2626 species is compiled from over 16,700 

 records, and is arranged under the five county divisions, or 

 vice-counties, employed by H. C. Watson in " Cybele 

 Britannica," viz.: — 61, South-east Yorks.; 62, North-east 

 Yorks. ; 63, South-west Yorks.; 64, Mid-west Yorks.; 65, 

 North-west Yorks. The records are quoted in the order of 

 priority of date of first record, hence the divisions do not 

 follow a fixed sequence. 



The number of records for each vice-county is as follows: — 

 S.W. Mid W. N.W. N.E. S.E. 



7912. 2369. 1188. 4018. 1226. 



While every care has been taken to include all reliable 

 records, many considered to be of a doubtful nature have 

 been excluded. Others, as Zasmidium ceUare Fr. ; Anthina 

 flammnla Fr. ; Octoma viridis Rabh. ; etc., now known to be 

 nothing more than sterile mycelium, have been altogether 

 omitted. Others, as Trichoderma viride Pers. ; Sepedoninm 

 chrysospermiim Fr. ; Bispora monilioides Corda, and a few njore 

 of the group Hyphomycetes, now looked upon as conidial 

 conditions of higher forms, have been printed in small 

 capitals within square brackets [ ] and have not been 

 numbered. 



The paucity of information respecting the numbers and 

 distribution of other counties renders comparative tables 

 meaningless. The only other county whose Mycological 



Trans. Y.N.U., 1905 (pub. 1905). Bot. Series, Vol. 6. 



